diff --git a/package.json b/package.json
index c6dd51f..f1f3dc0 100644
--- a/package.json
+++ b/package.json
@@ -39,6 +39,12 @@
           ],
           "order": 2
         },
+        "claudex.customModel": {
+          "type": "string",
+          "markdownDescription": "自定义模型列表，逗号分隔；示例：`my-model-a, my-model-b`",
+          "default": "",
+          "order": 2.1
+        },
         "claudex.permissionMode": {
           "type": "string",
           "markdownDescription": "权限模式",
diff --git a/src/services/claude/client.ts b/src/services/claude/client.ts
index 886b259..8a902e7 100644
--- a/src/services/claude/client.ts
+++ b/src/services/claude/client.ts
@@ -24,6 +24,7 @@ export class ClaudeClient {
   private activeBus?: UiMessageBus;
   private activeSessions: Map<string, UiMessageBus> = new Map();
   private currentSessionId?: string;
+  private configWatcher?: vscode.Disposable;
 
   constructor(
     private readonly sessionService: IClaudeCodeSessionService,
@@ -39,10 +40,47 @@ export class ClaudeClient {
     this.logService.debug('[ClaudeClient] Webview 已连接');
 
     // 发送初始化消息
+    const cfg = vscode.workspace.getConfiguration('claudex');
+    const builtInModels = ['claude-4-sonnet', 'claude-4.1-opus'];
+    const custom = (cfg.get<string>('customModel') || '')
+      .split(',')
+      .map(s => s.trim())
+      .filter(s => !!s);
+    // 合并并去重
+    const models = Array.from(new Set([...builtInModels, ...custom]));
+    const selectedModel = cfg.get<string>('model') || models[0] || 'claude-4-sonnet';
+
     this.sendToWebview({
       type: 'system/ready',
       payload: {
-        capabilities: ['chat', 'sessions', 'streaming', 'permissions', 'tools']
+        capabilities: ['chat', 'sessions', 'streaming', 'permissions', 'tools'],
+        models,
+        selectedModel
+      }
+    });
+
+    // 监听配置变化，动态推送模型列表和默认选择
+    this.configWatcher?.dispose();
+    this.configWatcher = vscode.workspace.onDidChangeConfiguration(e => {
+      if (
+        e.affectsConfiguration('claudex.customModel') ||
+        e.affectsConfiguration('claudex.model')
+      ) {
+        const cfg2 = vscode.workspace.getConfiguration('claudex');
+        const custom2 = (cfg2.get<string>('customModel') || '')
+          .split(',')
+          .map(s => s.trim())
+          .filter(Boolean);
+        const models2 = Array.from(new Set([...builtInModels, ...custom2]));
+        const selected2 = cfg2.get<string>('model') || models2[0] || 'claude-4-sonnet';
+        this.sendToWebview({
+          type: 'system/ready',
+          payload: {
+            capabilities: ['chat', 'sessions', 'streaming', 'permissions', 'tools'],
+            models: models2,
+            selectedModel: selected2
+          }
+        });
       }
     });
   }
@@ -70,6 +108,9 @@ export class ClaudeClient {
         case 'chat/send':
           await this.handleChatSend(message.payload);
           break;
+        case 'settings/open':
+          await vscode.commands.executeCommand('workbench.action.openSettings', message.payload?.query || 'claudex');
+          break;
         case 'chat/interrupt':
           this.handleChatInterrupt();
           break;
@@ -195,7 +236,7 @@ export class ClaudeClient {
   /**
    * 处理聊天发送
    */
-  private async handleChatSend(payload: { text: string; sessionId?: string }): Promise<void> {
+  private async handleChatSend(payload: { text: string; sessionId?: string; model?: string }): Promise<void> {
     if (!payload?.text?.trim()) {
       this.sendToWebview({
         type: 'system/error',
@@ -227,6 +268,11 @@ export class ClaudeClient {
 
     try {
       const request: ClaudeRequest = { prompt: payload.text };
+      if (payload.model) {
+        request.options = {
+          model: payload.model
+        } as any;
+      }
       const controller = new AbortController();
 
       const result = await this.claudeAgent.handleRequest(
@@ -281,6 +327,24 @@ export class ClaudeClient {
   private async handleUIReady(): Promise<void> {
     // 初始化时发送会话列表
     await this.handleSessionList();
+
+    // 再次发送系统能力与模型列表，避免早期消息丢失
+    const cfg = vscode.workspace.getConfiguration('claudex');
+    const builtInModels = ['claude-4-sonnet', 'claude-4.1-opus'];
+    const custom = (cfg.get<string>('customModel') || '')
+      .split(',')
+      .map(s => s.trim())
+      .filter(s => !!s);
+    const models = Array.from(new Set([...builtInModels, ...custom]));
+    const selectedModel = cfg.get<string>('model') || models[0] || 'claude-4-sonnet';
+    this.sendToWebview({
+      type: 'system/ready',
+      payload: {
+        capabilities: ['chat', 'sessions', 'streaming', 'permissions', 'tools'],
+        models,
+        selectedModel
+      }
+    });
   }
 
   /**
@@ -353,6 +417,7 @@ export class ClaudeClient {
     this.activeBus?.complete();
     this.activeSessions.clear();
     this.webview = undefined;
+    this.configWatcher?.dispose();
     this.logService.debug('[ClaudeClient] 已清理资源');
   }
-}
\ No newline at end of file
+}
diff --git a/webview/src/components/ButtonArea.vue b/webview/src/components/ButtonArea.vue
index 486493e..dda0095 100644
--- a/webview/src/components/ButtonArea.vue
+++ b/webview/src/components/ButtonArea.vue
@@ -85,28 +85,19 @@
           </template>
 
           <template #content="{ close }">
-            <DropdownItem
-              :item="{
-                id: 'claude-4-sonnet',
-                label: 'claude-4-sonnet',
-                checked: selectedModelLocal === 'claude-4-sonnet',
-                type: 'model'
-              }"
-              :is-selected="selectedModelLocal === 'claude-4-sonnet'"
-              :index="0"
-              @click="(item) => handleModelSelect(item, close)"
-            />
-            <DropdownItem
-              :item="{
-                id: 'claude-4.1-opus',
-                label: 'claude-4.1-opus',
-                checked: selectedModelLocal === 'claude-4.1-opus',
-                type: 'model'
-              }"
-              :is-selected="selectedModelLocal === 'claude-4.1-opus'"
-              :index="1"
-              @click="(item) => handleModelSelect(item, close)"
-            />
+            <template v-for="(m, idx) in modelOptions" :key="m">
+              <DropdownItem
+                :item="{
+                  id: m,
+                  label: m,
+                  checked: selectedModelLocal === m,
+                  type: 'model'
+                }"
+                :is-selected="selectedModelLocal === m"
+                :index="idx"
+                @click="(item) => handleModelSelect(item, close)"
+              />
+            </template>
             <DropdownSeparator />
             <DropdownItem
               :item="{
@@ -115,8 +106,8 @@
                 rightIcon: 'codicon-chevron-right',
                 type: 'action'
               }"
-              :index="2"
-              @click="(item) => handleModelSelect(item, close)"
+              :index="modelOptions.length + 1"
+              @click="() => handleOpenModelSettings(close)"
             />
           </template>
         </DropdownTrigger>
@@ -166,6 +157,7 @@
 <script setup lang="ts">
 import { ref, computed } from 'vue'
 import { DropdownTrigger, DropdownItem, DropdownSeparator, type DropdownItemData } from './Dropdown'
+import { modelState, openSettings } from '../services/messageBus'
 
 interface Props {
   disabled?: boolean
@@ -192,7 +184,8 @@ const props = withDefaults(defineProps<Props>(), {
   hasInputContent: false
 })
 
-const selectedModelLocal = ref(props.selectedModel)
+const selectedModelLocal = computed(() => modelState.selected || props.selectedModel)
+const modelOptions = computed(() => modelState.options.length ? modelState.options : [props.selectedModel])
 
 const emit = defineEmits<Emits>()
 
@@ -260,18 +253,19 @@ function handleModelDropdown() {
 
 function handleModelSelect(item: DropdownItemData, close: () => void) {
   console.log('Selected model:', item)
-  selectedModelLocal.value = item.id
+  // 更新全局选中模型
+  if (item.type === 'model') {
+    modelState.selected = String(item.id)
+  }
   close()
 
   // 可以在这里添加模型切换的业务逻辑
-  switch (item.id) {
-    case 'claude-4-sonnet':
-      console.log('Switching to Claude 4 Sonnet')
-      break
-    case 'claude-4.1-opus':
-      console.log('Switching to Claude 4.1 Opus')
-      break
-  }
+  console.log('Switched model to:', item.id)
+}
+
+function handleOpenModelSettings(close: () => void) {
+  openSettings('claudex.customModel')
+  close()
 }
 </script>
 
diff --git a/webview/src/pages/ChatPage.vue b/webview/src/pages/ChatPage.vue
index abdce1b..c51a5e7 100644
--- a/webview/src/pages/ChatPage.vue
+++ b/webview/src/pages/ChatPage.vue
@@ -79,6 +79,7 @@ import ChatInputBox from '../components/ChatInputBox.vue';
 import InputExtraBox from '../components/InputExtraBox.vue';
 import MessageContainer from '../components/Messages/MessageContainer.vue';
 import type { Todo, FileEdit } from '../../types/toolbar';
+import { modelState } from '../services/messageBus';
 
 // 定义事件
 const emit = defineEmits<{
@@ -86,7 +87,7 @@ const emit = defineEmits<{
 }>();
 
 const progressPercentage = ref(48.7);
-const selectedModel = ref('claude-4-sonnet');
+const selectedModel = computed(() => modelState.selected);
 
 // 计算聊天标题
 const chatTitle = computed(() => {
@@ -357,4 +358,4 @@ function handleNewChat() {
   width: 100%;
   align-self: center;
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/webview/src/services/messageBus.ts b/webview/src/services/messageBus.ts
index cf4ec22..8f8701d 100644
--- a/webview/src/services/messageBus.ts
+++ b/webview/src/services/messageBus.ts
@@ -46,6 +46,12 @@ export const messageQueueState = reactive<MessageQueueState>({
   queuedMessages: []
 });
 
+// 模型状态
+export const modelState = reactive({
+  options: [] as string[],
+  selected: 'claude-4-sonnet'
+});
+
 // ========== 消息总线 ==========
 
 class WebviewMessageBus {
@@ -213,10 +219,26 @@ class WebviewMessageBus {
       console.log('[MessageBus] 新会话已创建:', message.payload.sessionId);
     });
 
-    // 处理系统就绪
+    // 处理系统就绪（也作为配置更新使用）
     this.on('system/ready', (message) => {
       sessionState.capabilities = message.payload.capabilities;
-      console.log('[MessageBus] 系统就绪:', message.payload.capabilities);
+      console.log('[MessageBus] 系统就绪/更新:', message.payload.capabilities);
+      // 更新模型列表
+      if (Array.isArray(message.payload.models)) {
+        const newOptions = message.payload.models.slice();
+        modelState.options = newOptions;
+
+        // 如果当前选择不在新列表里，则回退到推荐或第一个
+        if (!newOptions.includes(modelState.selected)) {
+          const recommended = message.payload.selectedModel && newOptions.includes(message.payload.selectedModel)
+            ? message.payload.selectedModel
+            : (newOptions[0] || modelState.selected);
+          modelState.selected = recommended;
+        }
+      } else if (message.payload.selectedModel && !modelState.selected) {
+        // 初次初始化：没有 options 时保存默认选择
+        modelState.selected = message.payload.selectedModel;
+      }
     });
 
     // 处理系统错误
@@ -732,7 +754,7 @@ export function sendChatMessage(text: string, sessionId?: string): string {
   // 发送到 Extension
   messageBus.send({
     type: 'chat/send',
-    payload: { text, sessionId }
+    payload: { text, sessionId, model: modelState.selected }
   });
 
   return requestId;
@@ -876,4 +898,14 @@ if (typeof window !== 'undefined') {
       requestSessionList();
     }, 100);
   });
-}
\ No newline at end of file
+}
+
+/**
+ * 打开设置（可传查询）
+ */
+export function openSettings(query?: string) {
+  messageBus.send({
+    type: 'settings/open',
+    payload: { query }
+  });
+}
diff --git a/webview/types/messages.ts b/webview/types/messages.ts
index 35f8b8e..de4ab08 100644
--- a/webview/types/messages.ts
+++ b/webview/types/messages.ts
@@ -91,6 +91,8 @@ export interface SystemReadyMessage extends BaseMessage {
   type: 'system/ready';
   payload: {
     capabilities: string[];
+    models?: string[];
+    selectedModel?: string;
   };
 }
 
@@ -144,6 +146,7 @@ export interface ChatSendMessage extends BaseMessage {
   payload: {
     text: string;
     sessionId?: string;
+    model?: string;
   };
 }
 
@@ -167,6 +170,14 @@ export interface PermissionResponseMessage extends BaseMessage {
   };
 }
 
+// 打开设置
+export interface SettingsOpenMessage extends BaseMessage {
+  type: 'settings/open';
+  payload: {
+    query?: string;
+  };
+}
+
 // ========== 联合类型 ==========
 
 // Extension发出的所有消息
@@ -187,7 +198,8 @@ export type WebviewMessage =
   | SessionSwitchMessage
   | ChatSendMessage
   | ChatInterruptMessage
-  | PermissionResponseMessage;
+  | PermissionResponseMessage
+  | SettingsOpenMessage;
 
 // 所有消息的联合类型
 export type Message = ExtensionMessage | WebviewMessage;
@@ -300,4 +312,4 @@ export function isSDKSystemMessage(msg: SDKMessage): msg is SDKSystemMessage {
 
 export function isSDKStreamEvent(msg: SDKMessage): msg is SDKPartialAssistantMessage {
   return msg.type === 'stream_event';
-}
\ No newline at end of file
+}